doi: 10.1126/science.1697984.
LFA-3, CD44, and CD45: physiologic triggers of human monocyte TNF and IL-1 release
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- PMID: 1697984
- DOI: 10.1126/science.1697984
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LFA-3, CD44, and CD45: physiologic triggers of human monocyte TNF and IL-1 release
Science.
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Abstract
The monocyte-derived cytokines, tumor necrosis factor-alpha (TNF-alpha) and interleukin-1 beta (IL-1 beta), are central regulators of the immune response, but the physiologic stimuli for their release remain largely undefined. Engagement of three monocyte glycoproteins, LFA-3, CD44, and CD45, by specific monoclonal antibodies immobilized on plastic induced TNF-alpha and IL-1 beta release. In addition, TNF-alpha was released when monocyte LFA-3 bound immobilized, purified CD2, which is its physiologic receptor. Thus, a receptor-ligand interaction that mediates cell-cell adhesion can transmit the necessary signals for the release of monokines.
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